Question

An object is placed 5.00 cm beyond the focal point of a convex lens whose focal length is 10.0 cm. If the object height is 3.0 cm, calculate the image height.

A. 150
B. -6.0
C. 1.5

What is the orientation of the image? Erect or inverted?

Answer 1

Hi = -6.0 cm

What is the orientation of the image? inverted

Answer 2

The height of the image is, h' = 6.0 cm

The image is erect.

Step-by-step explanation:

Given data,

The object distance, u = -5 cm

The focal length of convex lens, f = 10 cm

The object height, h = 3 cm

The lens formula,

`(1)/(f)=(1)/(v)-(1)/(u)`

`(1)/(10)=(1)/(v)-(1)/(-5)`

`(1)/(v)=(1)/(10)-(1)/(5)`

v = -10 cm

The magnification factor of lens

`m=(-10)/(-5)`

m = 2

`m=(h')/(h)`

`h'=h* m`

`h'=3* 2`

h' = 6 cm

The height of the image is, h' = 6 cm

The image is erect.